chore(ci): Removes manual yarn install (#21)
chore(ci): Removes manual yarn install (#21)

We don't need to manually install and run yarn now that TravisCI supports it natively.
https://blog.travis-ci.com/2016-11-21-travis-ci-now-supports-yarn
Talend/ui,Talend/ui,Talend/ui,Talend/ui,Talend/ui